This is a quick way to make easy cash, nothing extensive.
So first off, you need a Leathworker (370) either yourself or have a friend, and an Enchanter, either yourself or have a friend help you disenchant the item.
Check your Auction House prices for Borean Leather.
If your prices are 13 gold or lower, you're in luck.
Buy all stacks that are 13 gold and lower.
Have the Leathworker make Nerubian Legguards, and lots of them.
Disenchant these Legguards, for 2 - 5 infinite dust, and of course resell the infinite dust.
The infinite dusts are selling like crazy on the AH atm due to people wanting new enchants for their new Ulduar gear.
Well, I hope this works out for you, good luck!
(P.S. The Borean Leathers were going for 8 gold a stack on my server, so I was in luck! :P)